* {
    margin: 0;
    padding: 0;
}

ul li {
    list-style: none;
}

html {
    font-size: 10px;
    overflow-x: hidden;
}

body {
    width: 100vw;
}

.head {
    width: 100vw;
    height: .4rem;
    background-color: #ff8a00;
    position: relative;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-evenly;
}

.head_s>img {
    width: 1.1rem;
    display: flex;
}

.head_s {
    width: 2.5rem;
}

.head_a {
    flex: 0.55;
    display: flex;
    /* 不换行 */
    flex-wrap: nowrap;
    /* 间距相等（均分） */
    justify-content: space-evenly;
}

.head_a>a {
    display: flex;
    justify-content: space-evenly;
}

.head_a>a>img {
    width: 0.2rem;
}